How to build mobile API with Node.js

Apr 7, 20140 likes1,054 views

This document provides tips for being prepared for the rise of Node.js and APIs for mobile applications. It discusses how Node.js is well-suited for building APIs and real-time applications due to its asynchronous and event-driven nature. It also offers recommendations for tools to use for Node.js development, such as unit testing with Mocha, package management with npm, process management with PM2, and deployment with Ansible.

HOW TO BE PREPARED
FOR NODE-POCALYPSE
@tomekcejner

Any application that can be written in JavaScript,
will eventually be written in JavaScript.
http://blog.codinghorror.com/the-principle-of-least-power/
Jeff Atwood, 2007

CREATED IN 10 DAYS
DIFFICULT CHILDHOOD
FUNCTIONAL
DYNAMIC

http://www.amazon.com/

http://www.lego.com/

NOW ITS 2010’S
EVERYBODY NEEDS MOBILE APP

NO API
NO PUBLIC API
NO MOBILE PUBLIC API
ARE YOU PREPARED?

LOW BANDWIDTH
HIGH LATENCY
NETWORK CONDITIONS VARY
Mobile device is

AVOID MULTIPLE ROUNDTRIPS
CAUSED BY LAZY DESIGN
EVERY REQUEST COUNTS

SECURITY
AUTHENTICATION
TRANSIT
API ABUSE

OAUTH 2.0
AUTHORIZATION
API KEYS
Access control

DATA AGGREGATION
DATA FILTERING
ANTI-CORRUPTION LAYER
Translation

PUSH NOTIFICATIONS GATEWAY
Mobile features

EVENT-DRIVEN
NETWORK PROGRAMS
JAVASCRIPT
Node.js is

V8
LIBUV HTTP-PARSER
JS STANDARD LIBRARY

DB
SERVICE
REQUEST
REQUEST
REQUEST
REQUEST
TRADITIONAL WAY

WHAT WEB SERVERS DO MOST THE TIME?
THEY WAIT

WHAT THREADS DO MOST THE TIME?
THEY SUCK

EVENT
LOOP
I/O
REGISTER CALLBACK
OPERATION COMPLETE
YOUR
CODE
YOUR
CODE

LESS THREADS
LESS MEMORY OVERHEAD
LESS COMPUTATION (!)

tomek@dev_laptop$ git push
appuser@server$ git pull
appuser@server$ kill process_num
appuser@server$ node myapp.js
DEPLOYMENT

MANAGEMENT
WITH PM2
https://github.com/unitech/pm2

ZERO-DOWNTIME RELOAD
HEALTH CHECK API ENDPOINT
LOG BROWSING
LINUX STARTUP SCRIPTS
Fluﬀ

GOOGLE: JAVASCRIPT GARDEN
http://bonsaiden.github.io/JavaScript-Garden/

JAVASCRIPT QUIRKS
JSLINT & JSHINT TO RESCUE

ASYNC TO RESCUE
https://github.com/caolan/async

https://github.com/caolan/async

DEVELOP FAST
DEPLOY FAST
IT’S JAVASCRIPT

IT’S JAVASCRIPT
NOT SO MATURE
NOT FOR CPU-INTENSIVE JOBS

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How to build mobile API with Node.js

1. HOW TO BE PREPARED FOR NODE-POCALYPSE @tomekcejner

2. THE PRESENTER TOMEK CEJNER @tomekcejner

3. APOCALYPSE?

4. JavaScript

5. Any application that can be written in JavaScript, will eventually be written in JavaScript. http://blog.codinghorror.com/the-principle-of-least-power/ Jeff Atwood, 2007

7. CREATED IN 10 DAYS DIFFICULT CHILDHOOD FUNCTIONAL DYNAMIC

9. IN 90’S EVERYBODY NEED A WEBSITE

10. http://www.amazon.com/

11. http://www.lego.com/

12. NOW ITS 2010’S EVERYBODY NEEDS MOBILE APP

17. THAT’S ALL THANK YOU!

18. BUT, IF…

19. API

21. NO API NO PUBLIC API NO MOBILE PUBLIC API ARE YOU PREPARED?

22. WHAT MAKES API MOBILE?

23. LOW BANDWIDTH HIGH LATENCY NETWORK CONDITIONS VARY Mobile device is

24. SEND ONLY WHAT IS NEEDED